Can you think of any three-dimensional shape that comprises of exactly two surfaces?

What does below chemistry rebus means?

Given below is simple addition with a defined pattern pattern:
7 + 7 = 2
8 + 8 = 4
8 + 5 = 1
6 + 9 = 3
10 + 11 = 9

Can you analyze the pattern and find out the answer for:

4 + 9 = ?

When we see 2 but call 10?

Solve The below Equation:

ALFA + BETA + GAMA = DELTA

Doctor Alex and a bus driver John are both in love with the same woman named Olivia. The bus driver need to go for a long trip of 10 days, Before he left he gave Olivia 10 apples.

Replace the letters of words with a number so that the below equation holds true

BASE +
BALL
---------
GAMES
----------

Three brothers Jacob, John, and James live in Mexico City. The product of the ages of these brothers is 175. Jacob and John are twins. How old is James?

Krish is 45 years old and his mother Crishtina is 73 years old.

Can you find out how many years ago, his mother was three times his age?

Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?